213031102231 has 4 divisors (see below), whose sum is σ = 213050275992. Its totient is φ = 213011928472.

The previous prime is 213031102217. The next prime is 213031102279. The reversal of 213031102231 is 132201130312.

213031102231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213031102231 - 2⁵ = 213031102199 is a prime.

It is a super-2 number, since 2×213031102231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213031102199 and 213031102208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213031102201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9570205 + ... + 9592438.

It is an arithmetic number, because the mean of its divisors is an integer number (53262568998).

Almost surely, 2^213031102231 is an apocalyptic number.

213031102231 is a deficient number, since it is larger than the sum of its proper divisors (19173761).

213031102231 is a wasteful number, since it uses less digits than its factorization.

213031102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19173760.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213031102231 its reverse (132201130312), we get a palindrome (345232232543).

The spelling of 213031102231 in words is "two hundred thirteen billion, thirty-one million, one hundred two thousand, two hundred thirty-one".